Check it out: http://www.dangermouse.net/esoteric/piet.html
This is a pretty naive implementation, but it can run things like fib:
[[/tree/master/images/helloworld-pietbig.gif|align=center]]
rpiet --debug images/nfib.png
Or an image from the net (notice codel size arg):
rpiet -c 8 http://www.retas.de/thomas/computer/programs/useless/secunet_contest/entry_3/s2_8.gif
Or for more fun:
rpiet http://www.dangermouse.net/esoteric/piet/pietquest.png
